Conferences - Seminars

27APR
  13:00-14:00 MA 12

When does a group virtually admit a faithful C^2 action on the circle? We provide an obstruction using a RAAG. Examples include all (non-virtually-free) mapping class groups, Out(Fn) and Torelli groups. This answers a question by Farb. (Joint work with Hyungryul Baik and Thomas Koberda) Read more about "Obstruction for a virtual C^2 action on the circle"
By Sang-Hyun Kim Seoul National University
01MAY
30JUN
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  00:01-23:59

Bike to Work 2017 is here! We cordially invite you to participate in this new edition. In May and June, come on campus by bike! Our goal is to beat last year’s record, with 525 participants and a total distance of 131'539 km! In addition to many prizes, participants will get invitations to special events ... Read more about "Bike to work 2017"